ASSOCIATION OF HUMPS ON MONOPHASIC ACTION-POTENTIALS AND ST-T ALTERNANS IN A PATIENT WITH ROMANO-WARD SYNDROME

被引：4

作者：

SAKURADA, H ^{[1
]}

TEJIMA, T ^{[1
]}

HIYOSHI, Y ^{[1
]}

MOTOMIYA, T ^{[1
]}

HIRAOKA, M ^{[1
]}

机构：

[1] TOKYO MED & DENT UNIV,MRI,DEPT CARDIOVASC DIS,TOKYO 113,JAPAN

来源：

PACE-PACING AND CLINICAL ELECTROPHYSIOLOGY | 1991年 / 14卷 / 10期

关键词：

MONOPHASIC ACTION POTENTIAL; ST-T ALTERNANS; ROMANO-WARD SYNDROME; EARLY AFTER DEPOLARIZATION;

D O I：

10.1111/j.1540-8159.1991.tb04070.x

中图分类号：

R5 [内科学];

学科分类号：

1002 ; 100201 ;

摘要：

A case of Romano-Ward syndrome had episodes of torsade de pointes preceded by ST-T alternans. ST-T alternans was induced by isoproterenol and abolished by verapamil, lidocaine, mexiletine and MgSO4. A monophasic action potential (MAP) showed humps in MAPs at the right ventricular outflow tract but not at the right ventricular apex in alternate beats. Differences in the MAP duration were noted between the two areas and were associated with ST-T alternans. Atrial pacing abolished both humps and ST-T alternans. These results suggest that humps are a possible reflection of early afterdepolarizations and their appearance is limited to localized regions of the ventricles, which produces regional disparity of repolarization and ST-T alternans.

引用

页码：1485 / 1491

页数：7